Drought response strategies are coupled with leaf habit in 35 evergreen and deciduous oak (Quercus) species across a climatic gradient in the Americas
2022-04-19
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2012-06-01
2015-10-01
2015-10-01
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2022-02-14
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Title
Drought response strategies are coupled with leaf habit in 35 evergreen and deciduous oak (Quercus) species across a climatic gradient in the Americas
Published Date
2022-04-19
Author Contact
Cavender-Bares, Jeannine
cavender@umn.edu
cavender@umn.edu
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Experimental Data
Experimental Data
Abstract
• Survival strategies under contrasting environments often result from trade-offs in plant function. Adaptations to stress involve investment in resistance mechanisms that enhance survivorship but limit growth. We test the hypothesis that among the oaks (Quercus spp.) of the Americas some species will have greater drought resistance at the cost of reduced growth capacity.
• We investigate trait variation in relation to native environments in species representing the major lineages within the oak phylogeny and test their response to three experimental water treatments.
• Trade-offs between drought resistance strategies, such as osmolyte accumulation in leaves, and growth appear in all lineages, indicating both adaptation and evolutionary constraints in physiological traits. Species from mesic environments did not show evidence of faster growth or more resource-acquisitive traits. Xeric species had higher gas exchange rates despite lower stomatal pore area but did not have the capacity to increase growth in well-watered treatments.
• Leaf habit plays an important role in drought resistance strategy. Evergreen species show drought tolerance or drought avoidance but require investment of resources like leaf solutes that limit growth under well-watered conditions. In contrast, deciduous species appear to follow a drought tolerance strategy, growing under all water treatments in spite of the risk.
• The data included here was used to develop allometric equations to model growth for the study.
Description
A readme file, a data file (.csv), and a text file (.csv) with allometric regression equations are included for the oak allometry data. A readme, a data file (.csv) and a modified phylogeny (.tre) are included for the common garden data from the New Phytologist publication.
Referenced by
Kaproth, M. A., Fredericksen, B. W., González‐Rodríguez, A., Hipp, A. L., & Cavender‐Bares, J. (2023). Drought response strategies are coupled with leaf habit in 35 evergreen and deciduous oak (Quercus) species across a climatic gradient in the Americas. The New Phytologist, 239(3), 888–904.
https://doi.org/10.1111/nph.19019
Kaproth, MA, and J Cavender-Bares, 2016. Drought tolerance and climatic distributions of the American oaks. International Oaks 27:49-60
https://www.internationaloaksociety.org/content/drought-tolerance-and-climatic-distributions-american-oaks-0
https://doi.org/10.1111/nph.19019
Kaproth, MA, and J Cavender-Bares, 2016. Drought tolerance and climatic distributions of the American oaks. International Oaks 27:49-60
https://www.internationaloaksociety.org/content/drought-tolerance-and-climatic-distributions-american-oaks-0
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Funding information
NSF 1146488: Phylogeny of the New World oaks: Diversification of an ecologically important clade across the tropical-temperate divide, awarded to A. Hipp, J. Cavender-Bares, P. Manos, J. Romero-Severson, A. Gonzalez-Rodriguez
McKnight Foundation, University of Minnesota, awarded to Jeannine Cavender-Bares
McKnight Foundation, University of Minnesota, awarded to Jeannine Cavender-Bares
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Suggested citation
Kaproth, Matthew A.; Fredericksen, Brett W.; González-Rodríguez, Antonio; Cavender-Bares, Jeannine. (2022). Drought response strategies are coupled with leaf habit in 35 evergreen and deciduous oak (Quercus) species across a climatic gradient in the Americas. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/7sgf-pp20.
View/Download file
| File View/Open | Description | Size |
|---|---|---|
| Allometry Final Harvest 2012-2015 - measured traits and biomass.csv | Trait and biomass data used to generate allometric equations for modeling growth | 425.87 KB |
| Allometry Regression Equations 2012-2015.csv | Allometric equations used for modeling plant growth in experimental conditions | 7.09 KB |
| README_for_oak.allometry.txt | Description of oak allometry data | 4.73 KB |
| Drought tolerance common garden summary (Treatment, Species) removed low replicates.csv | Drought tolerance common garden summary | 82.34 KB |
| tr.singletons.GlobalOaks2019_Quercus_NotIdentified_sistertoQcastanea.tre | Modified phylogeny | 19.35 KB |
| README_for_oak.commongarden.txt | Description of oak common garden data | 8.87 KB |
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